US2507519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosiloxanes
Assignee: Dow Silicones Corp
•
Filing: 1949-03-19
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Granted: 1950-05-16
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Expires: 1969-03-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John T Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:58
CPC Classifications
C; C08; C08G; C08G77/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A SILOXANE COPOLYMER WHICH COPOLYMER CONTAINS SILICON ATOMS BONDED TO OXYGEN, AND SILICON ATOMS ALL THE BONDS OF WHICH ARE SATISFIED BY CARBON, AND WHICH COPOLYMER CONTAINS AN AVERAGE OF BETWEEN 1.98 AND 2.1 ORGANIC PER SILICON ATOM OF THE TYPE HAVING OXYGEN ATOMS BONDED THERETO, OVER 50% OF SAID ORGANIC RADICALS BEING METHYL RADICALS, THE REMAINING RADICALS BEING SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
65 words
A SILOXANE COPOLYMER WHICH COPOLYMER CONTAINS SILICON ATOMS BONDED TO OXYGEN, AND SILICON ATOMS ALL THE BONDS OF WHICH ARE SATISFIED BY CARBON, AND WHICH COPOLYMER CONTAINS AN AVERAGE OF BETWEEN 1.98 AND 2.1 ORGANIC PER SILICON ATOM OF THE TYPE HAVING OXYGEN ATOMS BONDED THERETO, OVER 50% OF SAID ORGANIC RADICALS BEING METHYL RADICALS, THE REMAINING RADICALS BEING SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |